02: Write the phrase as a mathematical expression:
1. twelve more than a number
2. a number decreased by nine
3. eleven times a number
4. one fourth of a number
5. six divides a number
6. seven divided by a number
7. 15 subtracted from a number f
8. the total of five and d
9. five less than twice a number y
10. three more than the product of 4 and a
